It's worth mentioning that the Russian government has a plan to completely detach the country from the wider Internet. This system has already been tested and is available at the flick of a switch. Unfortunately, it's probably a matter of time until this system is activated for real and the Iron Curtain drops to the floor. Then Putin will find some way to blame the West and rally against us.
I don't believe that this is coming. It would have large economic costs (how to conduct international business with "friendly" countries? etc. etc.), would piss off a significant share of the population (e.g. online gamers) etc. It's just not worth it. For countries like Russia, the goal isn't necessarily to cut off all connections, the goal is to discourage it, make it expensive, annoying, slow, so that a large majo…
I don't they'll hesitate to do it if they see the need to. Putin wants the Soviet times back at any cost. He has many strings he can pull if he feels threatened.